Applies to all Reolink cameras and NVR( cameras in the NVR kit doesn't come with UID).
UID is a 16-character code which is used on occasions when you’d like to access your Reolink camera(s)/NVR from remote locations. And the UID always start with "XCPTP" or "9527".
Step 1: Find your camera in Reolink client, open Device Settings.
Step 2: Go to Network-> Others Setting, the UID with the QR code will display.